The Secret Service was one Gerry Anderson show that got it all wrong. Firstly, you can't have a show mixing puppets with real live actors, it's either one or the other. Secondly, the idea of a Church bishop doubling up as a secret agent and going on dangerous missions is too far fetched for its own good. The episodes weren't that memorable either; each puppet show has standout episodes, but this has none. And that whole 'Unwinese' thing was just plain silly.
Only worth watching if you are a die hard Gerry Anderson fan, otherwise, this is a very disappointing series.